Operator for windows with swinging



Aug. 11, 1959 A. w. AHLGREN 2,399,195

OPERATOR FOR wmoows WITH swmcmc SASH Filed. July 18. 1956 2 Sheets-Sheet 1 2 EQvsu-rom M'xel wcn u mm Aug. 11, 1959 A. w. AHLGREN 2,899,195

' OPERATOR FOR WINDOWS WITH swmcmqsmn Filed July 18, 1956 2 Sheets-Sheet 2 oqxel Qfcflhjg m A7 a H I TTQIQMEX/ r 'eneaan .,1.1.. 195a Washers, Ms as.

Axel W;'*Alilgre1i," Rockford, 11]., assignor. to Amero'ck rcraticet t skt rfl a a eewf i s 11 Application my 18, 1 956, Serial No. 598,638

1 Claim. (Cl. 268-105) This invention relates to a window operator such as may be used for awning type windows-v in which the sash is. mounted on .the window frame, to swing abouta horizontal axisiextending along the upper edge of, the sash. More particularly, the invention relatesto an operator with two horizontalarms pivotally mounted on' the frame to; swingtogethenandsapart and joined. to the lower edge of the sash to open and close the latter upon such swinging. The arms are joined to the sash by a connection which permits the arms to slide back and forth along the lower sash edge.

The general object of the invention is to provide an operator of the above character with a new and improved connection between each arm and the sash which connection is durable in service use, is comparatively simple in construction and easy to manufacture and permits the arms and the sash to be detached when desired.

A more detailed object is to form each connection from a plastic cylindrical shoe which is mounted on the outer end of the corresponding arm and slides in a horizontally disposed cylindrical channel on the lower edge of the sash.

A further object is to mold the shoe integrally in a novel manner with a bracket which, in turn, is mounted on the arm.

The invention also resides in the novel construction of the connection between the bracket and the arm so that the bracket may be detached from the arm and also to permit the bracket and hence the shoe to swivel relative to the arm.

Other objects and advantages of the invention will become apparent from the following detailed description talllren in connection with the accompanying drawings, in w ich Figure 1 is a fragmentary perspective view of an awning type window incorporating the novel operator of the present invention.

Fig. 2 is an enlarged fragmentary sectional view taken along the line 22 in Fig. 1.

Fig. 3 is a fragmentary perspective view of the outer end of one of the arms.

Fig. 4 is a plan view of the bracket and the shoe.

Fig. 5 is a perspective view of the bracket and the shoe.

Fig. 6 is a sectional view taken along the line 6-6 in Fig. 4.

Fig. 7 is a sectional view taken along the line 7-7 in Fig. 4.

Fig. 8 is a perspective view of the bracket.

As shown in the drawings for purposes of illustration, the invention is embodied in an operator 10 for opening and closing the sash 11 of an awning type window. As is well known in the art, the sash is pivotally mounted on the frame of the window to swing about a horizontal axis extending along the upper edge of the sash so that the lower edge may be moved toward and away from the sill 12 of the frame.

The operator 170 includes a pair of elongated horizontal arms 13 whose inner ends are pivotally connected a; to;the casing ;14 .o f the operator so that -the-ar1ns aboutupright axes. The casing is fastened to thesill 12 and the arms areturned about their axes by a handle 15, The latterfis'connected tothe, armsby suitable gearing which is-disposed within the casing and it may be of the pe, shown in. y. c p s ppl at o $e a ,..Nq-r 59,8,637fi1ed1uly '18, 1 956.; The gearing is such that the arms swing in unison but in; opposite directions.

The outer ends of the arms 13 are joined to the lower edge of" the sashll by a connection 16 which permitsthe ends of, the arms to, slidelaterally back andfourth along the sash. -When the arms are swung toward each other; as;shown. in broken lines in Fig l, they pushthe bottom edge of the; sash 11 out thus openingthe window.-- ;As the arms are; swung apart toward the; position shown in-full lines-in which the arms-are alined and are parallel with the sash,;thelatteris drawn closed, 1 e ,1; T. ran; .slnaccordance with thepresent invention, the; connections-,16 =betweenthearms 13 and thesash 11- are ar; ranged in' a novel manner to permit easy opening ;and closing of qthe window,- ,to facilitate detaching the from the sash and to provide a simple and inexpensive construction. Generally, the connections include an elongated horizontal channel 17 which is attached to the bottom edge portion of the sash 11 and which receives a shoe 18 (Fig. 2) that slides back and forth in the channel. There is a shoe on the end of each arm 13 and each shoe is mounted on a bracket 19 which is pivoted on the outer end of .the arm to permit the shoe to turn relative to the arm as the shoe slides in the channel.

Herein, the channel 17 is a sheet metal stamping with a downwardly projecting flange portion 20 (see Fig. 2) which is attached to the sash by means of screws 21. The channel proper is cylindrical, describing an arc of somewhat more than degrees and opening downwardly, and it extends transversely along the central portion of the sash near the lower edge thereof.

Each bracket 19 is generally L-shaped, having a horizontal leg 22 and an upright leg 23, and a shoe 18 is secured to the latter leg. In the present instance, the shoe is cylindrical in shape and is formed of molded plastic such as nylon. To secure the shoe to the leg, perforations 24 (Figs. 7 and 8) are formed in this leg along its upper edge. The shoe is molded directly onto the leg, the nylon flowing through the perforations so that the shoe is attached rigidly to the leg.

In order to detachably connect the bracket 19 to the outer end of the arm 13, a small post 25 upstanding from the end portion of the arm projects through a hole 26 (Fig. 5) in the leg 22. A latch member 27 in the form of a sheet metal plate with a downturned finger piece 28 is pivotally attached to one edge portion of the leg 22 by a pin 29. The plate is formed with a notch 30 which opens toward the post. Thus, the plate may be swung forward to place the post within the notch. In this position (illustrated in Fig. 7) the plate projects in under the head 31 of the post and thus prevents the bracket 19 from being lifted off the post. The plate is held in the latched position by a detent 32 which is in the form of an ear struck down from the plate and which snaps into a hole 33 in the leg 22.

As the sash is swung open, the outer ends of the arms 13 are raised somewhat and this results in a slight upward bowing of the arms. To permit such bowing, each bracket 19 is mounted on the end of the corresponding arm 13 for a limited amount of universal swiveling. Such swiveling is achieved by giving the extreme outer end portion 34 of each arm a spherical shape and by making the hole 26 in the leg 22 somewhat larger than the post 25. With this arrangement, the leg is free to rock in any direction on the spherical end portion 34 as illustrated in Fig. 7.

It will be observed that the use of the cylindrical channel 17 and the cylindrical shoes 18 not only perrnits the latter to slide endwise in the channel but also allows the shoes to turn relative to the channel as the window sash 11 swings in and out. Being made from a plastic such as nylon, the shoes slide freely in the channel and havegoofd wear characteristics. At the same time, the. shoesare securely attached to the bracket 19 since theyiare molded directly onto the leg and through the perforations; If it is desired to detach the sash from the arms, such' as may be desired when washing the window, this may be effected easily simply by snapping back the latch plates 27 and lifting the brackets 19 off the posts 25.

I claim as my invention:

An operator for a window having a frame and a sash mounted on the frame to swing about an axis extending along one edge of the sash, said operator comprising a support adapted to be attached to said frame, twoelongated arms pivotally connected at one end to said support to swing toward and away from each other in a plane parallel to said axis, the outer end portions of said arms having spherical contours, manually operable means for swinging said arms in unison but in opposite directions, an elongated member adapted to be secured to the free edge portion of said sash and having a cylindrical surface extending lengthwise of the member, a plate having a hole therein, a shoe attached to said plate, said shoe having a cylindrical surface mating with the surface on said member to slide back and forth on the member, a post projecting outwardly from the spherical portion of one of said arms and through said hole and having an enlarged head, a latch element mounted on said plate to move to- Ward and away from a latching position and having a slot receiving said post when in the latching position, said slot being narrower than said head to prevent said plate from being removed from said post, a second post on the spherical portion of the other of said arms, a second and similar plate and latching member mounted on said post, and a shoe attached to said second plate and slidably mating with said member, said plates swiveling on said spherical portions.

References Cited in the file of this patent UNITED STATES PATENTS 2,034,759 Hughes Mar. 24, 19 36 2,505,912 Reynaud May 2, 1950 2,528,572 Bancroft Nov. 7, 1950 2,775,446 Stavenau et al; Dec. 25, 1956 2,811,349 Bondurant et al Oct. 29, 1957 Wal s 

